https://android.clients.google.com/updates/partner/signed-kila-ota-148830.de6a94ca.zip
Here you go folks. This is for regular retail non dev non rooted phones! (US Users) Click the link to download the Cupcake 1.5 update zip file. Finally Cupcake is here for everyone! This is real and legit I updated my phone this morning using the zip file. If you do not know how to manually update, please see the "Real and Official OMG I got Cupcake" thread as I have posted detailed instructions there on how to do this. Enjoy your cupcakes US G1 users!